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|
# {{ ansible_managed }}
include "/etc/bird/clear_defines.conf";
include "/etc/bird/clear_functions.conf";
include "/etc/bird/clear_rpki.conf";
include "/etc/bird/clear_filters.conf";
define CLEARNET_PREFIP = {{ uvok_bird_opts.preferred_ip }};
# trs=transit
ipv6 table t_myas_prefixes;
ipv6 table t_myas_unfiltered;
ipv6 table t_myas_trs;
ipv6 table t_myas_babel;
# have it in a separate table, so I can easily pipe it.
protocol static myprefix {
{% for prefix in uvok_bird_opts.clear_prefixes %}
route {{ prefix }} reject;
{% endfor %};
ipv6 {
table t_myas_prefixes;
import all;
export none;
};
}
# pipe t_myas_prefixes => t_myas_unfiltered
protocol pipe {
table t_myas_prefixes;
peer table t_myas_unfiltered;
import none;
export all;
}
# blackhole everything else - activates RPKI filter!
protocol static default6 {
route ::/0 reject;
ipv6 {
preference 10;
table t_myas_trs;
import all;
export none;
};
}
protocol direct {
ipv6 { table t_myas_babel; };
interface "myas_int";
};
template bgp pt_clearnet {
local as CLEARNET_ASN;
{% if uvok_bird_opts.strict_bind %}
strict bind on;
{%- endif %}
graceful restart on;
long lived graceful restart on;
prefer older on;
# Neighbor as must be first route as
enforce first as on;
# faster updates
enable extended messages on;
# defaults anyway
enable route refresh on;
interpret communities on;
direct;
# higher better
default bgp_local_pref 100;
# my value - lower better
default bgp_med 100;
ipv6 {
# start by importing into the unfiltered table
table t_myas_unfiltered;
# for inspection who's evil
import keep filtered;
# for RPKI / ROA
import table on;
import filter {
clearnet_import_transit();
clearnet_common_import();
accept;
};
export filter myas_export;
};
}
# route collector
template bgp pt_rc from pt_clearnet {
multihop;
# yes, use unfiltered table for export
ipv6 {
add paths tx;
import none;
export filter myas_f_rc;
};
}
{% if uvok_bird_opts.babel_if_names %}
protocol babel p_myas_babel {
ipv6 {
table t_myas_babel;
import filter {
{% if uvok_bird_opts.babel_accept_default %}
# accept also default route
{% else %}
if is_default_route() then reject;
{% endif %}
accept;
};
export where source ~ [RTS_DEVICE, RTS_BABEL, RTS_STATIC];
};
{% for babif in uvok_bird_opts.babel_if_names %}
interface "{{ babif }}" {
# needs newer bird2
type tunnel;
};
{% endfor %}
}
{% endif %}
# pipe babel table => bgp table for next-hop resolution?
protocol pipe {
table t_myas_babel;
peer table t_myas_trs;
import none;
export where source ~ [RTS_BABEL];
}
# EXPORT FROM unfilteed TO filtered trs table
protocol pipe {
table t_myas_unfiltered;
peer table t_myas_trs;
import none;
export filter {
if ( bgp_large_community ~ [(CLEARNET_ASN, LC_FILTERED, *)] ) then {
reject;
}
accept;
};
}
# pipe my prefixes into babel so I have non-existing hosts covered
protocol pipe {
table t_myas_prefixes;
peer table t_myas_babel;
import none;
export all;
}
# BGP *internal* table
protocol kernel p_myas_i {
# scan time 20;
kernel table 150;
ipv6 {
table t_myas_babel;
import none;
export filter {
# put own unreachable route into kernel table
if (proto = "myprefix") then {
accept;
}
if (source != RTS_BABEL) then {
print "SHOULD NOT HAPPEN: export babel to kernel: ", net, " from", source;
reject;
}
# DO NOT PUT DEFAULT ROUTE INTO TABLE 150!!
# This will completely replace *the default route for non-my-AS-traffic* !!!
# will be copied into "BGP table" anyway.
if is_default_route() then reject;
accept;
};
};
};
protocol kernel pk_myas_out {
kernel table 100;
ipv6 {
table t_myas_trs;
import none;
export filter {
krt_prefsrc = CLEARNET_PREFIP;
if (source = RTS_BGP) then {
accept;
}
# static default route
if (source = RTS_STATIC) then {
accept;
}
{% if uvok_bird_opts.babel_accept_default %}
# add babel default route
if is_default_route() then accept;
{% endif %}
reject;
};
};
};
include "/etc/bird/clear_peers/*.conf";
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